From: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx> Date: Tue, 18 Aug 2009 23:40:46 -0400 > * David Miller (davem@xxxxxxxxxxxxx) wrote: >> From: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx> >> Date: Tue, 18 Aug 2009 22:56:23 -0400 >> >> > BTW, I can't figure out why we have %o5 in : >> > >> > SIGN2(sys32_sync_file_range, compat_sync_file_range, %o0, %o5) >> > >> > which takes only 4 arguments: >> > >> > int sync_file_range(int fd, off64_t offset, off64_t nbytes, >> > unsigned int flags); >> > >> > maybe it has something to do with the return value ? Anyway it should >> > not hurt if it is unused. >> >> It takes 4 arguments, but they are passed in 6 registers. Each >> off64_t is passed in two 32-bit register parts. >> > > Thanks for the clarification. So the %o5 is there to sign-extend > "unsigned int flags" ? Yes, but it seems that might be inappropriate (albeit harmless) here. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
